|Practical mod_perl / HTML Book /|
22.1.2. install_driver(Oracle) failed: Can't load `.../DBD/Oracle/Oracle.so' for module DBD::Oracle
install_driver(Oracle) failed: Can't load '/usr/lib/perl5/site_perl/5.6.1/i386-linux/auto/DBD/Oracle/Oracle.so' for module DBD::Oracle: libclntsh.so.8.0: cannot open shared object file: No such file or directory at /usr/lib/perl5/5.6.1/i386-linux/DynaLoader.pm line 169. at (eval 27) line 3 Perhaps a required shared library or dll isn't installed where expected at /usr/local/apache/perl/tmp.pl line 11
On BSD-style filesystems, LD_LIBRARY_PATH is not searched for setuid programs. If Apache is a setuid executable, you might receive this error. Therefore, the first solution is to explicitly load the library from the system-wide ldconfig configuration file:
panic# echo $ORACLE_HOME/lib >> /etc/ld.so.conf panic# ldconfig
Another solution to this problem is to modify the Makefile file (which is created when you run perl Makefile.PL) as follows:
Search for the line LD_RUN_PATH=
Replace it with LD_RUN_PATH=my_oracle_home/lib
where my_oracle_home is, of course, the home path to your Oracle installation. In particular, the file libclntsh.so.8.0 should exist in the lib subdirectory.
Then just type make install, and all should go well.
Note that setting LD_RUN_PATH has the effect of hardcoding the path to my_oracle_home/lib in the file Oracle.so, which is generated by DBD::Oracle. This is an efficiency mechanism, so that at runtime it doesn't have to search through LD_LIBRARY_PATH or the default directories used by ld.
For more information, see the ld manpage and the essay on LD_LIBRARY_PATH at http://www.visi.com/~barr/ldpath.html.
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